Maxim > Products > Optoelectronics > DS3920

DS3920

Fast Current Mirror

Provides Optimized APD Bias and Mirror for PON Applications

Overview

Technical Documents

Ordering Info

Status

Active: In Production.

Description

The DS3920 precision current mirror is designed for avalanche photodiode (APD) and PIN photodiode biasing and monitoring applications. The device offers a current clamp to limit current through the APD and a current mirror output that produces a signal proportional (5:1) to the APD current. A diode is also provided to limit the voltage at the current mirror output.

The device accepts a +2.97V to +76V current mirror supply voltage. Internal current limiting (4.4mA or 20mA, typ) protects the monitored device from a short circuit to ground. The provided internal clamp diode protects the current mirror output from overvoltage. Additionally, the device features thermal shutdown if the die temperature reaches +150°C.

The device is available in a 6-pin SOT23 package, and operates over the -40°C to +85°C extended temperature range.

Data Sheet

Download	Rev 2	(PDF, 1.6MB)
E-Mail

Key Features

Wide Voltage Input Range: 2.97V to 76V
Current Monitor
- Wide 250nA to 2mA Range
- 5:1 Mirror Ratio
- Fast 50ns Time Constant
Current Clamp (4.4mA or 20mA, typ)
Voltage Clamp Protects Subsequent Output Circuitry
6-Pin SOT23 (MAX4007 Compatible)

Applications/Uses

Avalanche Photodiode (APD) Biasing
GEPON, GPON, 10GEPON, XGPON: ONU and OLT
PIN Photodiode Monitoring

Key Specifications:

Fiber Photodiode Current Monitors

Part Number

Photo Diode Appl.

I_DIODE

V_BIAS
(V)

Package/Pins

Smallest Available Pckg.
(mm²)

Oper. Temp.
(°C)

Budgetary Price

min

max

max w/pins

See Notes

DS3920

APD

10µA

4mA

SOT/6

-40 to +85

$0.57 @1k

See All Fiber Photodiode Current Monitors (7)

Pricing Notes:
This pricing is BUDGETARY, for comparing similar parts. Prices are in U.S. dollars and subject to change. Quantity pricing may vary substantially and international prices may differ due to local duties, taxes, fees, and exchange rates. For volume-specific prices and delivery, please see the price and availability page or contact an authorized distributor.

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Information Index

Overview		Technical Documents		Ordering Info		Related Products
Description Key Features Applications/Uses Key Specifications Diagram Notes and Comments		Data Sheet Application Notes Evaluation Kits Product Guides Reliability Reports Software/Models		Price and Availability Samples Buy Online Package Information Lead-Free Information		Similar Products by Function Similar Products by Application Evaluation Kits Products with Similar Part Numbers Products Used With This

Document Ref.: 19-5797 Rev 2; 2011-12-19
This page last modified: 2011-12-19